CP Chemistry Practice Final

How many electrons does barium have to give up to achieve a noble-gas electron configuration (a full energy level)?

• 4

• 1

• 2

• 5

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following formulas represents an ionic compound?

• CS₂

• PCl₃

• BaI₂

What is the maximum number of d orbitals in a principal energy level?

• 10

• 5

When naming acids, the prefix hydro- is used when the name of the acid anion ends in

• -ic

• -ide

The equation 2C₃H₇OH + 9O₂ → 6CO₂ + 8H₂O is an example of which type of reaction?

• single-replacement reaction

• combustion reaction

The expression of 5008 km in scientific notation is

• 5.008 × 10⁴ km

• 5.008 × 10³ km

Which of the following compounds has the formula KNO₃?

• potassium nitrate

• potassium nitride

Aluminum is a metal in group 13. Which ion does Al typically form?

• Al⁵⁻

• Al³⁺

• Al³-

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The sum of the protons and neutrons in an atom equals the

• mass number

• atomic height

Tags

NGSS.MS-PS1-5

How many valence electrons are in a silicon atom?

• 4

• 8

Tags

NGSS.HS-PS1-1